Pentair Sta-Rite S7D75/S8D110/DES/DEP Center Rod (23900-0039Z) precision The “V” thread detail matters

The “V” thread detail matters because tank lid designs are not universal across all filter versions

The Waterway 218-6610 Power Storm jet diffuser is designed for compatible jet assemblies and comes in white

this DE grid replacement filter helps support cleaner water and more dependable overall filter performance

and this Polaris and Zodiac version is designed for 180

and this Little Giant APCP-1700 version is rated at 1700 gallons per hour using the 577301 reference

Pentair Sta-Rite S7D75/S8D110/DES/DEP Center Rod (23900-0039Z) precision The “V” thread detail mattersThis center rod is used inside compatible Sta Rite S7D75, S8D110, DES, and DEP filter assemblies to help secure and align internal filter components. A bent, corroded, or damaged rod can make it difficult to tighten the assembly evenly and may compromise how the grids or internal parts seat inside the tank. Replacing it helps support even clamping pressure and reliable filter operation. Supports proper internal filter alignment Helps secure DE filter